kern/104406: [ufs] Processes get stuck in "ufs" stateunderpersistent CPU load

Kris Kennaway kris at
Sun Nov 4 14:26:21 PST 2007

Oleg Derevenetz wrote:
>>>>> Dumpdev is swap partition on da0 (single physical disk) that 
>>>>> connected to Mylex AcceleRAID 170 RAID controller. The problem 
>>>>> arrives when I copy large amount of files from FTP to another disk 
>>>>> (da1) that is connected to the same RAID controller.
>>>> If the driver or controller is misbehaving it could explain both 
>>>> problems. Any chance you can get another disk in there on a 
>>>> different controller to dump onto?
>>> Yes, I got IDE disk and saved kernel dump for another static hang 
>>> state on it. Here is the dump:
>> Is this just the vmcore, or the debugging kernel also?  Both are 
>> needed to make sense of the dump.
> Kernel binary with kernel config is here:
> This kernel was built statically, and no modules loaded on boot at all.
> -- 
> Oleg Derevenetz <oleg at> OOD3-RIPE
> Phone: +7 4732 539880
> Fax:   +7 4732 531415
> CenterTelecom Voronezh ISP

That kernel doesn't appear to match with the vmcore, are you sure it is 
the right one?  Are you able to successfully run kgdb on these locally?


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